In downstream oil and gas, LPG: a systematic iteration of conformity assessment activities as a basis for maintaining the validity of the statement of conformity (footnote 26: ISO/IEC 17000) [Section 3.57, Rule 3, DTI Department Administrative Order No. 22-11, Series of 2022, The New Technical Regulation Concerning the Mandatory Certification of Liquefied Petroleum Gas (LPG) Pressure Vessels, Systems, Services and Ancillary Products]
